The Miami Heat continued efforts to fortify its roster on Monday while one of its stars underwent surgery.

Dwyane Wade had a successful 20-minute arthroscopic procedure on his left knee, with the objective of eliminating the swelling and discomfort that plagued him during the postseason. He is expected to be fine for the start of training camp.

The Heat, meanwhile, continued to await a decision from Rashard Lewis, who met with team officials on Sunday in Miami. Lewis also plans to meet with Atlanta (which could offer him more money) and potentially the Knicks before deciding.

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“It went well,” agent Tony Dutt said of Lewis’ meeting with the Heat. “We’re talking to a couple more teams and will make a decision later in the week.”

Lewis is making $13.7 million in a buyout next season, which makes the Heat cautiously optimistic that he would be willing to take a deal for the $1.3 million minimum.

But the Heat lost out in its pursuit of free agent center Marcus Camby, who reportedly is bound for the Knicks through a sign-and-trade with Houston. According to Yahoo!, the Rockets will get Toney Douglas, Josh Harrelson, Jerome Jordan and two second-round picks --- a package more appealing than anything the Heat was willing to offer.

Miami also has inquired about several other free agents, including guard Courtney Lee (who’s too expensive) and John Lucas III, a 5-10 point guard who averaged 7.5 points for the Bulls last season.

If Lewis signs, the Heat would have 13 players under contract, including Ray Allen, who plans to sign Wednesday, and swingman Mike Miller, who hasn’t decided whether to undergo back surgery.

One of the two remaining spots could go to a big man. The other spot could go to a guard, such as Lucas or free agent Terrel Harris.

Utah agreed to trade or buy out former FIU guard Raja Bell, but the Heat has not called about him. Bell, 35, said he would be interested in the Heat, Knicks and Lakers.

Wade was asked what he thinks when he hears people saying he’s getting old and losing it.

“I’m only 30,” he said. “I look at certain players like Michael Jordan, Kobe Bryant, players I’ve modeled my game after, and those guys got better at 30, won more championships at 30. So I’m just getting started.”

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Asked about the Heat adding Allen, Wade said, “It’s weird, because you say the guys that you mark on your calendar — ‘Oh, I’ve got to go against this guy that night’ — two of them are on my team now, LeBron James and Ray Allen.”

On missing the Olympics because of knee surgery, Wade said, “It’s weird. It doesn’t feel great. I’m not one of those guys saying I’m glad I’m not there. I wish I was there.”

This And That

• The Heat’s 16-player summer league roster, released Monday, includes Norris Cole, Dexter Pittman, Harris, former UM forward Adrian Thomas, former LSU center Justin Hamilton (Miami’s second-round pick) and former Heat second-round forwards Robert Dozier and Jarvis Varnado. The team will play five games over seven days, beginning Sunday, at the NBA Summer League in Las Vegas.

• Celtics co-owner Wyc Grousbeck, commenting Monday about Allen’s departure to WEEI-radio in Boston: “We respect his decision. I think it’s fantastic because it just riles me up that he went to our archrival for half price. What’s that about? I’m not going to say we wish him the best, but we wish him a difficult season in Miami.”

• Instead of holding a “Zo’s Groove” this summer, Alonzo Mourning said he will schedule several charity events this winter, because more people will be in town at that time. He also will hold a charity dinner/concert from 6:30 to 10 p.m. July 19 at the Rusty Pelican.

Cost is $125 per person, or $550 for five tickets. To purchase tickets, call 305-349-1204 or visit www.overtownyouth.org.

Mourning said his events have raised $7 million to $10 million over the past 15 years, with money benefiting the Overtown Youth Center, the Honey Shine Mentoring Program and other local charities.

• The Heat is allowing fans to see the Larry O’Brien Trophy, given to the NBA champion, at the team’s store inside AmericanAirlines Arena from 10 a.m. to 4 p.m. until July 20.